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Finding the Fourth Proportional to 53,113.78, 79,670.89 and 21,524.44

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Solution

The fourth proportional to 53,113.78, 79,670.89 and 21,524.44 is: 32,286.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,113.78 : 79,670.89 = 21,524.44 : x
  2. Step 2: Convert to fraction form
    53,113.78/79,670.89 = 21,524.44/x
  3. Step 3: Cross multiply
    53,113.78x = 79,670.89 × 21,524.44
  4. Step 4: Simplify right side
    53,113.78x = 1,714,871,291.55
  5. Step 5: Solve for x
    x = 1,714,871,291.55/53,113.78
  6. Step 6: Final answer
    x = 32,286.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.